ABSTRACT
Design is an iterative process; therefore, preliminary design outputs will be used to produce prototypes, conduct trials and simulations. The design review process should produce evidence that the design output meets the design input requirements. A design description alone will not result in its realization unless provision has been made in the design to enable its effective construction or delivery. Products should be designed to facilitate procurement, manufacture, storage, transportation, installation and servicing and therefore additional characteristics to those required for end use may be necessary. The design input requirements should have been expressed in a way that would allow several possible solutions. The design output data should identify by use of symbols or codes the critical to quality (CTQ) characteristics. Documented information emerging from the design and development process is used in many ways and at different times.
